These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
The President of the Russian Federation (Russian: ÐÑÐµÐ·Ð¸Ð´ÐµÐ½Ñ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸, tr. Prezident Rossiiskoi Federatsii) is the elected head of state, Supreme Commander-in-Chief, and holder of the highest office in the Russian Federation. The current President of Russia is Vladimir Putin. In 1991, the office was briefly known as the President of the Russian Soviet Federative Socialist Republic (Russian: ÐÑÐµÐ·Ð¸Ð´ÐµÐ½Ñ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¡Ð¾Ð²ÐµÑÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð¹ Ð¡Ð¾ÑÐ¸Ð°Ð»Ð¸ÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð ÐµÑÐ¿ÑÐ±Ð»Ð¸ÐºÐ¸) until 25 December 1991